Viessmann VITODENS 200-W Service Instructions Manual
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Viessmann VITODENS 200-W Service Instructions Manual

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Service Instructions

for use by heating contractor
Vitodens 200-W, B2HA Series
Models 19, 28, 35
Wall-mounted, gas-fired condensing boiler
For operation with natural gas and liquid propane gas
Heating input
12 to 125 MBH
3.5 to 37 kW
VITODENS
5683 702 - 12
04/2016
200-W
r
H
Product may not be exactly as shown
IMPORTANT
Read and save these instructions
for future reference.
Please file in Service Binder

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Summary of Contents for Viessmann VITODENS 200-W

  • Page 1: Service Instructions

    Service Instructions for use by heating contractor Vitodens 200-W, B2HA Series Models 19, 28, 35 Wall-mounted, gas-fired condensing boiler For operation with natural gas and liquid propane gas Heating input 12 to 125 MBH 3.5 to 37 kW VITODENS 200-W...

  • Page 2: Safety, Installation And Warranty Instructions

    Safety Vitodens 200-W B2HA 19, 28, 35 Service Safety, Installation and Warranty Requirements Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life.
  • Page 3 Safety Vitodens 200-W B2HA 19, 28, 35 Service Safety, Installation and Warranty Requirements Fiberglass wool and ceramic fiber materials First aid measures - If eye contact occurs, flush eyes with water to WARNING remove dust. If symptoms persist, seek medical attention.

  • Page 4: Table Of Contents

    Table of Contents Vitodens 200-W B2HA 19, 26, 35 Service Page Safety Safety, Installation and Warranty Instructions....2 General Information About these Installation Instructions......6 Necessary Tools............6 Important Regulatory and Installation Requirements..7 Applicability..............9 Product Information............9 Mechanical Room.............10 Start-up and Service Accessing the User Interface Programming Unit...11 Select Language............11...
  • Page 5 Table of Contents Vitodens 200-W B2HA 19, 26, 35 Service Page Coding 1 General..............39 Boiler..............41 DHW...............41 Solar...............42 Heating Circuit 1, 2 and 3..........43 General..............47 Coding 2 Boiler..............54 DHW...............55 Solar...............57 Heating Circuit 1, 2 and 3..........61 Calling up the Service Level........67 Diagnosis and Service Scans Diagnosis..............68...

  • Page 6: General Information

    General Information Vitodens 200-W B2HA 19, 28, 35 Service About these Service Instructions Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below. Warnings draw your attention to the presence of WARNING potential hazards or important product information.

  • Page 7: Important Regulatory And Installation Requirements

    General Information Vitodens 200-W B2HA 19, 28, 35 Service Important Regulatory and Installation Requirements (continued) Codes Working on the equipment The installation of this unit shall be in accordance with The installation, adjustment, service, and maintenance local codes or, in the absence of local codes, use CAN/ of this boiler must be done by a licensed professional CSA-B149.1 or .2 Installation Codes for Gas Burning...
  • Page 8 CSD-1 Field Testing of High Limit Switches for Vitodens boilers – where required by law. VIESSMANN IS NOT RESPONSIBLE FOR ANY DAMAGES THAT THE FOLLOWING TEST PROCEDURE MAY RESULT IN BY OVERHEATING THE SYSTEM.

  • Page 9: Applicability

    (DHW) production. Follow the Vitodens Venting System Installation Instructions to vent this boiler. The Vitodens 200-W, B2HA series boiler comes factory set for operation with natural gas. For a fuel conversion to liquid propane gas (see page 16). Boiler model must be selected based on an accurate heat loss calculation of the building.

  • Page 10: Mechanical Room

    General Information Vitodens 200-W B2HA 19, 28, 35 Service Mechanical Room During the early stages of designing a new home, we recommend that proper consideration be given to constructing a separate mechanical room dedicated to the gas- or oil-fired heating equipment and domestic hot water storage tank(s).

  • Page 11: Accessing The User Interface Programming Unit

    General Information Vitodens 200-W B2HA 19, 28, 35 Service Accessing the User Interface Programming Unit 1. Turn up both locks to unlock the user interface programming unit covers. 2. Slide open the user interface programming unit covers. 3. Turn on the boiler by pressing the ON/OFF switch.

  • Page 12: Removing Front Enclosure Panel

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Removing Front Enclosure Panel Some of the following service steps require the removal of the front enclosure panel. To avoid personal injury and/or product damage of any kind please follow the instructions below carefully when removing the front enclosure panel.

  • Page 13: Fill Heating System With Water

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Fill Heating System with Water 3. To remove debris and/or sludge ensure that the system piping is flushed out. Failure to do so could cause settlement in the boiler causing overheating and damage not covered by warranty.

  • Page 14: Bleed (Vent) Air From Boiler Heat Exchanger

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Bleed (Vent) Air from Boiler Heat Exchanger 1. Connect hose to boiler filling tap and other end to a fresh water supply (or heating medium). 2. Open fresh water supply valve and then the boiler filling tap slowly (isolation valves must be closed during fill/bleed process).

  • Page 15: Check Power Supply Connection

    To enter names for heating circuits: Refer to the Operating Instructions Select Gas Type Note: the Vitodens 200-W, B2HA boiler is factory set to operate with natural gas. See following subsection for conversion instructions to liquid propane gas. 1. Ensure that the fuel type listed on the boiler rating plate is the correct type for the installation being attempted.

  • Page 16: Convert Fuel Type To Liquid Propane Gas

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Convert Fuel Type to Liquid Propane Gas 1. Set adjusting screw A at the gas valve to “2” (using a hex key, 2.5 mm). Note: The Vitodens 200-W, B2HA boiler comes factory adjusted for operation with natural gas.

  • Page 17: Measure Static Pressure And Running Pressure

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Measure Static Pressure and Running Pressure 1. To measure static and/or running pressure remove boiler enclosure panel as indicated page 12 in these instructions. 2. Close gas shutoff valve (field supplied).

  • Page 18: Sequence Of Operation And Potential Faults During Each Start-Up Cycle

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Sequence of Operation and Potential Faults During Each Start-up Cycle Display message Measures Increase set value and ensure Call for heat by control heat is drawn off Fan starts up After approx.

  • Page 19: Set Maximum Input

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Set Maximum Output The maximum input (or output) for heating operation can be limited. The limit is set via the modulation range. The maximum adjustable heating input (or output) is limited upwards by the boiler coding card.

  • Page 20: Check Coaxial Venting System For Leaks

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check Coaxial Venting System for Leaks (circular air gap measurement) Viessmann strongly recommends that the heating contractor perform a simplified leak test during boiler start-up. For this purpose it is sufficient to measure...

  • Page 21: Checking The Flue Gas Flapper

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Checking the Flue Gas Flapper 1. Undo three screws and remove fan A. 2. Remove the flue gas flapper B. 3. Check the flapper and gasket for dirt and damage.

  • Page 22: Check And Adjust Ignition And Ionization Electrodes

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check and Adjust Ignition and Ionization Electrodes 1. Check the ignition electrodes A and ionization electrode B for wear and contamination. 2. Clean electrodes with small brush (not a wire brush) or emery paper.

  • Page 23: Check Condensate Drain

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check Condensate Drain Cleaning condensate trap (during regular maintenance) 1. Remove retaining clip A from condensate trap B and set aside. 2. Disconnect the flexible discharge tubing C from the condensate trap B.

  • Page 24: Check Neutralization Unit (If Applicable)

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check Neutralization Unit (if applicable) 1. Check the pH value of the condensate with pH measuring strip. If the pH value is less than 6.5, replace granulate. 2. If contaminated: Rinse neutralization unit with tap water.

  • Page 25: Check Functioning Of Safety Valves

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check Functioning of Safety Valves Ensure proper operation of low water cut-off(s) (if applicable), pressure relief valve, and pump(s). Check pressure gage, air vent and pressure relief valve. Ensure that pressure relief valve does not leak and that it operates in accordance with information provided by the manufacturer.

  • Page 26: Clock Natural Gas Meter

    Multiply this number by the heating value of the gas to obtain Btu per hour input. For example: A Vitodens 200-W, B2HA 35 boiler (125 000 Btu/h input) requires 288 seconds to use 10 ft. of natural gas. After contacting the local utility, you will find the heating value is 1000 Btu per ft.

  • Page 27: Check Co 2 Setting

    Start-up and Service Vitodens 200-W B2HA 19, 28, 35 Service Check CO Setting The Vitodens 200-W, B2HA boiler is equipped with the 1. Connect a flue gas analyzer to test port A at boiler Combustion Management System developed by vent pipe adaptor.

  • Page 28: Outdoor Reset Programming Unit

    Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Start-up and Shutdown Starting the heating system 1. Check the heating system pressure at the pressure gauge. The heating system pressure is too low if the indicator points to the area below 15 psi.
  • Page 29 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Menu (continued) Note: For any other connected heating circuits, use the settings in the extended menu. Call up the standard menu as follows: - If the screen saver is active...

  • Page 30: Functional Description

    (%) for liquid propane gas Air factor λ 1.20 11.3 1.24 10.9 1.27 10.6 1.30 10.3 1.34 10.0 1.37 1.40 1.44 1.48 The Vitodens 200-W, B2HA boilers come equipped with Lambda Pro, the industry’s first intelligent combustion management system.

  • Page 31: Installation Examples

    Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Installation Examples Matching the control unit to the heating system The control unit must be matched to the equipment level of the system. Various system components are recognized automatically by the control unit and the relevant codes are adjusted automatically.
  • Page 32 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Installation Examples (continued) System type 2 System Examples for codes 00:3 and 00:4 Heating system with one heating circuit with mixing valve M2 with system separation, with/without DHW heating, with/without low loss header.
  • Page 33 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Installation Examples (continued) System type 3 System Examples for code 00:5 and 00:6 Heating system with one heating circuit without mixing valve, one heating circuit with mixing valve, one heating...
  • Page 34 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Installation Examples (continued) System type 4 System Example for code 00:7 and 00:8 Heating system with one heating circuit with mixing valve, one heating circuit with mixing valve M2 (with...

  • Page 35: Heating Curve Adjustments

    Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Heating Curve Adjustment The heating curves represent the relationship between The supply temperature that is required to achieve a given the outdoor temperature and the boiler water or supply room temperature depends on the heating system and temperature.
  • Page 36 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Heating Curve Adjustment (continued) Changing the slope and level Extended menu: 2. Select “Heating” - OK 3. Heating circuit selection 4. Accept with OK 5. Heating curve - OK 6.

  • Page 37: Connecting The Boiler Control To A Lon System

    Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Connecting the Boiler Control to a LON System Updating the LON participant list Scanning and resetting the “Service” display Only possible if all participants are connected and the After the limits specified in coding addresses “21” and control unit is programmed to be fault manager (coding “23”...
  • Page 38 Outdoor Reset Programming Unit Vitodens 200-W B2HA 19, 28, 35 Service Connecting the Boiler Control to a LON System (continued) The LON communication module (accessory) must be Note: In the same LON system, the same participant connected. number cannot be allocated twice. Only one Vitotronic may be programmed as fault manager.

  • Page 39: General

    Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service General Calling up coding level 1 2. “Coding level 1” Note: Codes are displayed as plain text. 3. Select group of required coding address: - “General” Codes that have no function due to the heating - “Boiler”...
  • Page 40 Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory set mode Possible change Internal circulation pump function 51:0 System with low loss header: 51:1 System with low loss header: Internal circulation pump always When there is a heat demand,...

  • Page 41: Boiler

    Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Boiler Select “Boiler” Coding in the factory setting Possible change Single/multi boiler system 01:1 Single boiler system 01:2 Multi boiler system with Vitotronic 300-K, MW2B control. Boiler number 07:1 Boiler number in multi boiler...

  • Page 42: Solar

    Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Solar Select “Solar” Note: The solar group is only displayed if a solar control module, type SM1, is connected. Coding Coding in the factory setting Possible change Speed control solar circuit pump...
  • Page 43 Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 Select “Heating circuit ...” Coding Coding in the factory setting Possible change Priority DHW heating A2:2 DHW tank priority applicable to A2:0 Without DHW tank priority...
  • Page 44 Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Extended economy function mixing valve A7:0 Without mixing valve economy A7:1 With mixing valve economy function function (extended heating circuit pump logic): Heating circuit pump also “OFF”:...

  • Page 45: Heating Circuit 1, 2 And 3

    Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Minimum flow temperature heating circuit C5:20 Electronic minimum flow temp. C5:1 Minimum limit adjustable from limit 68° F (20° C) 34 to 260°...
  • Page 46 Coding 1 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Pump control in “Only DHW” F6:25 In the “Only DHW” operating F6:0 In the “Only DHW” operating...

  • Page 47: General

    Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General If the heating circuits were given individual designations, Calling up coding level 2 Note: At coding level 2, all codes are accessible, including the selected designation and “HC1”, “HC2” or “HC3”...
  • Page 48 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Value address System version Description 00: ... One heating circuit with mixing valve M2 (heating circuit 2) and one heating circuit with mixing valve M3 (heating circuit 3), without DHW heating.
  • Page 49 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory setting Possible change 39:2 39:0 Function output sA: Circulation Function output sA: DHW pump for DHW tank heating recirculation pump. NOT USED 39:1 Function output sA: Heating circuit pump.
  • Page 50 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory setting Possible change 3C:0 Function input DE3 at extension 3C:1 Function input DE3: Heating EA1: Not assigned program - changeover. 3C:2 Function input DE3: External demand with set flow temperature.
  • Page 51 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory setting Possible change 51:0 System with low loss header: 51:1 System with low loss header: Boiler circuit pump is always When there is heat demand, the...
  • Page 52 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory setting Possible change 77:1 LON participant number 77:2 LON participant number, adjustable from 1 to 99: 77:99 1 - 4 = Boiler 5 = Cascade...
  • Page 53 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service General (continued) Coding in the factory setting Possible change 8A:175 Do not adjust. 8F:0 Operation in the standard 8F:1 Operation in the standard menu and extended menu and extended menu menu enabled blocked.

  • Page 54: Boiler

    Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Boiler Select “Boiler” Coding Coding in the factory setting Possible change 01:1 Single boiler system 01:2 Multi boiler system with Vitotronic 300-K. 04:1 Minimum burner pause subject 04:0 Minimum burner pause set...

  • Page 55: Dhw

    Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Select “DHW” Coding Coding in the factory setting Possible change 56:0 Set DHW temperature 56:1 Set DHW temperature adjustable adjustable from 50 to 140° F from 50 to over 140° F (10 to (10 to 60°...
  • Page 56 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service (continued) Coding in the factory setting Possible change 63:0 Without auxiliary function for 63:1 Auxiliary function: 1 x daily DHW heating DO NOT USE 63:2 Every 2 days to every 14 days.

  • Page 57: Solar

    Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Solar Select “Solar” Note: The solar group is only displayed if a solar control module, type SM1, is connected. Coding Coding in the factory setting Possible change 00:8 The solar circuit pump starts...
  • Page 58 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Solar (continued) Coding in the factory setting Possible change 09:130 The solar circuit pump stops 09:20 Temperature adjustable from if the collector temperature 68 to 392° F (20 to 200° C).
  • Page 59 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Solar (continued) Coding in the factory setting Possible change 11:50 Set DHW tank temperature for 11:10 The set DHW tank temperature for solar 122° F (50° C). solar can be adjusted from 50 to...
  • Page 60 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Solar (continued) Coding in the factory setting Possible change 23:4 Stop temperature differential 23:2 Stop temperature differential for central heating for central heating backup is backup: 4 K. 23:30 adjustable from 1 to 29 K.
  • Page 61 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 Select “Heating circuit ...” Coding Coding in the factory setting Possible change A0:0 Without remote control A0:1 With Vitotrol 200A (automatic recognition). A0:2 With Vitotrol 300A or Vitohome 300 (automatic recognition).

  • Page 62: Heating Circuit 1, 2 And 3

    Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change A4:0 With frost protection A4:1 No frost protection; this setting is only possible if code “A3:-9” has been selected.
  • Page 63 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change A8:1 Heating circuit with mixing valve A8:0 Heating circuit with mixing valve creates a demand for the boiler...
  • Page 64 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change C5:20 Electronic minimum flow C5:1 Minimum limit adjustable from 1 to temperature limit 68° F 260° F (127° C) (limited by boiler- (20°...
  • Page 65 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change E5:0 Without external variable speed E5:1 With external variable speed heating circuit pump heating circuit pump (automatic recognition).
  • Page 66 Coding 2 Vitodens 200-W B2HA 19, 28, 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change F6:25 In the “Only DHW” operating F6:0 In the “Only DHW” operating mode, mode, the circulation pump in...

  • Page 67: Calling Up The Service Level

    Diagnosis and Service Scans Vitodens 200-W B2HA 19, 28, 35 Service Calling up the Service Level Note: Do not adjust menu item “Multi-boiler system”. Press OK and simultaneously for approximately 4 The menu item turns a weather-compensated seconds control unit into a constant temperature control unit.

  • Page 68: Diagnosis

    Diagnosis and Service Scans Vitodens 200-W B2HA 19, 28, 35 Service Diagnosis The following values can be scanned, depending on the system installed: Display screen Explanation Slope A1 - shift A1 Slope M2 - shift M2 Outdoor temperature adjustment The adjusted outdoor temperature can be reset to the Outdoor temperature actual actual outdoor temperature with "D”.
  • Page 69 Diagnosis and Service Scans Vitodens 200-W B2HA 19, 28, 35 Service Diagnosis (continued) For an explanation of the relevant values in the individual lines and fields, see the following table: Line Field (brief scan) Heating circuit A1 Heating circuit M2...

  • Page 70: Checking Outputs (Relay Test)

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Checking Outputs (relay test) 1. Press OK and simultaneously for approximately 4 seconds 2. “Actuator test” The following relay outputs can be controlled subject to system design: Display Explanation All actuators All actuators are off.

  • Page 71: Fault Display

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Display  Acknowledging a fault In the event of a fault, red fault indicator A flashes. “ “ flashes on the display and “Fault” is shown. Follow the instructions on the display.
  • Page 72 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 Burner blocked Short circuit on boiler Check the boiler water water temperature temperature sensor sensor (see page 80).
  • Page 73 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 No solar DHW heating Tank temperature Check temperature sensor % sensor % cable broken on solar control module.
  • Page 74 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 Control mode without remote Communication error, Check connections, cable, control remote control Vitotrol coding address “A0” in “Heating heating circuit 2 circuit”...
  • Page 75 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display Code*2 Control mode Input DE3 reports a Remove fault at appliance fault at extension EA1 concerned. Control mode without...
  • Page 76 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 Burner blocked Fault, supply voltage Replace the control unit. 24 V Burner blocked Fault flame amplifier Replace control unit.
  • Page 77 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 Burner in a fault mode At burner start, flame Check gas supply (gas pressure signal is missing or too and gas regulator).
  • Page 78 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Fault Codes (continued) Fault code Detailed fault System behavior*1 Cause Corrective action on display code*2 Burner in fault mode Fan speed too low Check the fan, the fan cables during burner start and power supply.

  • Page 79: Corrective Action

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Corrective Action Continuous boiler pump operation If the Vitodens 200 B2HA boiler is reset, coding addresses 30:0 may automatically reset to 30:3. This will result in the boiler pump operating continuously. Verify that the coding address is 30:0.

  • Page 80: Checking The Boiler Temperature Sensor And Fixed High Limit, Dhw Tank Temperature Sensor Or Flow Temperature Sensor For The Low Loss Header

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Corrective Action (continued) Checking the boiler temperature sensor, DHW tank temperature sensor or flow temperature sensor for the low loss header 1. Boiler temperature sensor: Remove lead to boiler water temperature sensor §...

  • Page 81: Check Fixed High Limit

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Corrective Action (continued) Check fixed high limit Check the fixed high limit, if the burner control cannot be reset after a fault shutdown, although the boiler water temp. is below approx. 167°F (75°C): 1.

  • Page 82: External Extensions Am1 (Accessory)

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service External Extensions AM1 (accessory) Functions Select the output functions by means of the codes on One of the following circulation pumps can be connected the boiler control unit. to each of the connections A1 and A2:...

  • Page 83: Internal Extensions Ea1

    Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Internal Extensions EA1 Legend Refer to main wiring diagram on page 88. Fuse Digital input 1 Digital input 2 Digital input 3 0 – 10 V 0 - 10 V input fÖ...
  • Page 84 Troubleshooting Vitodens 200-W B2HA 19, 28, 35 Service Internal Extensions (Accessories) Digital data inputs DE1 to DE3 Effect of the external demand function on the pumps The following functions can be connected alternatively: The effect on the internal circulation pump is selected in coding address 3F in the “General”...

  • Page 85: Control Functions

    Function Description Vitodens 200-W B2HA 19, 28, 35 Service Control Functions External heating program changeover External blocking The “External heating program changeover” function is The “External blocking” and “External blocking and fault connected via input “EA1” in the EACB. message input” functions are connected via extension You can select which direction the heating program EA1.
  • Page 86 Function Description Vitodens 200-W B2HA 19, 28, 35 Service Control Functions (continued) Fill program Raising the reduced room temperature If the system is to be filled with the control unit switched During operation with reduced room temperature, the ON, code “2F:2” starts the pump. The burner shuts down reduced room setpoint temperature can be automatically if this function is enabled via coding address “2F”.

  • Page 87: Burner Program Sequence Of Operation

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Burner Program Sequence of Operation Phase 0: Stand-by Phase 6: Burner modulation operation or calibration Complete shutdown until the next call for heat. In this At the end of the flame stabilization period (4.5 seconds.),...

  • Page 88: Wiring Diagram

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Wiring Diagram CAUTION WARNING DISCONNECT POWER BEFORE Label all wires prior to disconnection SERVICING BOILER. when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation If any of the original wires as after servicing.
  • Page 89 Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Wiring Diagram (continued) Legend Outdoor Temperature Sensor Supply Temperature Sensor/Low Loss Header Boiler Temperature Sensor DHW Temperature Sensor Ionization Electrode Flue Gas temperature Sensor Boiler Pump DHW Pump [21] Pump Output Connection...

  • Page 90: Parts List

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Parts Lists Model No. Serial No. B2HA 19 Boiler 7510828 B2HA 28 Boiler 7510829 B2HA 35 Boiler 7510830 Ordering Replacement Parts: Please provide model no. from rating plate A and serial no.
  • Page 91 Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Parts Lists (continued) Model No. Serial No. B2HA 19 Boiler 7510828 B2HA 28 Boiler 7510829 B2HA 35 Boiler 7510830 Ordering Replacement Parts: Please provide model no. from rating plate and serial no.
  • Page 92 Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Parts Lists (continued) Model No. Serial No. B2HA 19 Boiler 7510828 B2HA 28 Boiler 7510829 B2HA 35 Boiler 7510830 Ordering Replacement Parts: Please provide model no. from rating plate and serial no.
  • Page 93 Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Parts Lists (continued) Model No. Serial No. B2HA 19 Boiler 7510828 B2HA 28 Boiler 7510829 B2HA 35 Boiler 7510830 Ordering Replacement Parts: Please provide model no. from rating plate and serial no.
  • Page 94 Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Parts Lists (continued) Model No. Serial No. B2HA 19 Boiler 7510828 B2HA 28 Boiler 7510829 B2HA 35 Boiler 7510830 Ordering Replacement Parts: Please provide model no. from rating plate and serial no.

  • Page 95: Technical Data

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Technical Data Boiler Model No. 200-W B2HA CSA input Natural Gas (NG) 12-67 19-100 19-125 (kW) (3.5-20) (5.5-29) (5.5-37) CSA input Liquid Propane Gas (LPG) 12-67 19-100 19-125 (kW) (3.5-20) (5.5-29) (5.5-37)
  • Page 96 Measured flue gas temperature with a combustion air temperature of 68°F (20°C). Based on maximum input rate. Requires 1 inch (25 mm) tubing. See the Installation Instructions of the Vitodens 200-W, B2HA for details. For side wall vent installations (coaxial system): Do not exceed max.

  • Page 97: Maintenance Record

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Maintenance Record...

  • Page 98: Lighting And Operating Instructions

    Additional Information Vitodens 200-W B2HA 19, 28, 35 Service Lighting and Operating Instructions FOR YOUR SAFETY READ BEFORE OPERATING W A R N I N G: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 99 Vitodens 200-W B2HA 19, 28, 35 Service...
  • Page 100 Vitodens 200-W B2HA 19, 26, 35 Service...

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